package com.zx.dsptuneup_cloud.widget.ui;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.CycleInterpolator;
import android.view.animation.TranslateAnimation;

import androidx.core.content.ContextCompat;

import com.zx.dsptuneup_cloud.R;

//import android.support.v4.content.ContextCompat;

public class ClearEditText extends ExtendedEditText implements View.OnFocusChangeListener, TextWatcher {
    private Context context;
    /**
     * 删除按钮的引用
     */
    private Drawable mClearDrawable;

    /**
     * 控件是否有焦点
     */
    private boolean hasFoucs;

    public ClearEditText(Context context)
    {
        this(context, null);
    }

    public ClearEditText(Context context, AttributeSet attrs)
    {
        // 这里构造方法也很重要，不加这个很多属性不能再XML里面定义
        this(context, attrs, android.R.attr.editTextStyle);
    }

    public ClearEditText(Context context, AttributeSet attrs, int defStyle)
    {
        super(context, attrs, defStyle);
        this.context = getContext();
        init();
    }

    @Override
    public boolean dispatchKeyEventPreIme(KeyEvent event)
    {
        clearFocus();
        return super.dispatchKeyEventPreIme(event);

    }

    private void init()
    {
        // 获取EditText的DrawableRight,假如没有设置我们就使用默认的图片
        mClearDrawable = getCompoundDrawables()[2];
        if (mClearDrawable == null)
        {
            // throw new NullPointerException("You can add drawableRight attribute in XML");

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                mClearDrawable = ContextCompat.getDrawable(context, R.mipmap.delete);
            } else {
                mClearDrawable = ContextCompat.getDrawable(context,R.mipmap.delete);
            }
        }

        mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(), mClearDrawable.getIntrinsicHeight());
        // 默认设置隐藏图标
        setClearIconVisible(false);
        // 设置焦点改变的监听
        setOnFocusChangeListener(this);
        // 设置输入框里面内容发生改变的监听
        addTextChangedListener(this);

//        setSelection(getText().length() >=0? getText().length():0);
    }

    /**
     * 因为我们不能直接给EditText设置点击事件，所以我们用记住我们按下的位置来模拟点击事件 当我们按下的位置 在 EditText的宽度 - 图标到控件右边的间距 - 图标的宽度 和 EditText的宽度 -
     * 图标到控件右边的间距之间我们就算点击了图标，竖直方向就没有考虑
     */
    @Override
    public boolean onTouchEvent(MotionEvent event)
    {
        if (event.getAction() == MotionEvent.ACTION_UP)
        {
            if (getCompoundDrawables()[2] != null)
            {
                /*
                 * && (event.getX() < ((getWidth() - getPaddingRight())))
                 */
                boolean touchable = event.getX() > (getWidth() - getTotalPaddingRight());

                if (touchable)
                {
                    this.setText("");
                }
            }
        }

        return super.onTouchEvent(event);
    }

    /**
     * 当ClearEditText焦点发生变化的时候，判断里面字符串长度设置清除图标的显示与隐藏
     */
    @Override
    public void onFocusChange(View v, boolean hasFocus)
    {
        this.hasFoucs = hasFocus;
        if (hasFocus)
        {
            setClearIconVisible(getText().length() > 0);
//            setSelection(getText().length() >=0? getText().length():0);
        }
        else
        {
            setClearIconVisible(false);
        }
    }

    /**
     * 设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去
     *
     * @param visible
     */
    public void setClearIconVisible(boolean visible)
    {
        Drawable right = visible ? mClearDrawable : null;
        setCompoundDrawables(getCompoundDrawables()[0], getCompoundDrawables()[1], right, getCompoundDrawables()[3]);
    }

    /**
     * 当输入框里面内容发生变化的时候回调的方法
     */
    @Override
    public void onTextChanged(CharSequence s, int start, int count, int after)
    {
        if (hasFoucs)
        {
            setClearIconVisible(s.length() > 0);
        }
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after)
    {

    }

    @Override
    public void afterTextChanged(Editable s)
    {
//        setSelection(getText().length() >=0? getText().length():0);
    }
    /**
     * 设置晃动动画
     */
    public void setShakeAnimation()
    {
        this.setAnimation(shakeAnimation(5));
    }

    /**
     * 晃动动画
     *
     * @param counts 1秒钟晃动多少下
     * @return
     */
    public static Animation shakeAnimation(int counts)
    {
        Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0);
        translateAnimation.setInterpolator(new CycleInterpolator(counts));
        translateAnimation.setDuration(1000);
        return translateAnimation;
    }
}
